CN206042212U - System for high -definition video signal's transmission node equipment, central receiving terminal equipment and transmission - Google Patents
System for high -definition video signal's transmission node equipment, central receiving terminal equipment and transmission Download PDFInfo
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- CN206042212U CN206042212U CN201620831166.2U CN201620831166U CN206042212U CN 206042212 U CN206042212 U CN 206042212U CN 201620831166 U CN201620831166 U CN 201620831166U CN 206042212 U CN206042212 U CN 206042212U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 34
- 230000008054 signal transmission Effects 0.000 title abstract description 9
- 230000006835 compression Effects 0.000 claims abstract description 50
- 238000007906 compression Methods 0.000 claims abstract description 50
- 230000003287 optical effect Effects 0.000 claims abstract description 48
- 230000006837 decompression Effects 0.000 claims description 27
- 238000013519 translation Methods 0.000 claims description 27
- 239000013307 optical fiber Substances 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 230000000007 visual effect Effects 0.000 claims description 5
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Abstract
The utility model discloses a system for high -definition video signal's transmission node equipment, central receiving terminal equipment and transmission, wherein node equipment and central receiving terminal equipment adopt the field programmable gate array FPGA unit, contract the high -definition video signal of transmission compression in optical network through the high -definition video signal compressiondecompression of the redundant encoding and decoding technique of vision to the way to can transmit the high -definition video signal of multichannel compression under the cost -effective condition.
Description
Technical field
This utility model is related to video transmission technologies, the transmission node equipment of more particularly to a kind of high-definition video signal, in
Heart receiving device and the system of transmission.
Background technology
With the development of transmission technology, become the developing direction of main flow using fiber-optic transfer data.Pass optical fiber is built
In defeated network, using optical transmitter and receiver, optical transmitter and receiver is the terminal unit of optical signal transmission.Traditional optical fiber transmission network is all point-to-point
, optical transmitter and receiver is separately positioned on the two ends of optical fiber, used as the sending and receiving end of optical signal.And in such as high-speed railway, tunnel and high speed
The occasions such as highway, the networking mode of point-to-point optical fiber transmission network are limited by very large, and this kind of application requirements optical fiber is passed
Defeated network organizing is chain network so that the optical transmitter and receiver of node type be linked into the network architecture application of center receiving device and
It is raw：Center receiving device is a convergence property equipment, can be by the various signal gatherings of each node device transmission of distal end
Exported to center, farthest save optical fiber and invest and improve fiber utilization.
Fig. 1 provides the fiber optic network structural representation of transmission video signal for prior art, as illustrated, positioned at distal end
Node device is optical transmitter and receiver, after the optical transmitter and receiver of the multiple different nodes of distal end is using the connection of optical fiber chain, accesses center receiving terminal
Equipment, each optical transmitter and receiver can access two video cameras, for by the two-path video signal of camera acquisition through affiliated
After optical transmitter and receiver is transferred to center receiving device, processes and show by center receiving device.At present, the network shown in Fig. 1
Prevailing transmission is SD video signal based on SD serial digital interface (SD-SDI), and the optical transmitter and receiver of each distant-end node can
It is any all the way or two-way SD video signal is sent to center receiving device and processes to choose configuration.
But, with the raising that people are required to video image, SD video signal is difficult to meet and requires, so being based on
Application of the high-definition video signal of high definition serial data interface (HD-SDI) in network shown in Fig. 1 is particularly important.High definition
Video support 1920*1080/1280*720 high definition resolution, with high definition and it is real-time the characteristics of, gradually start to be applied to height
Clear field of video monitoring.But the network shown in Fig. 1 is difficult to transmit high-definition video signal, this is because high-definition video signal all the way
Bandwidth be 1.485Gbps, and band a width of 1.25Gbps or 2.5Gbps of the conventional optical transmitter and receiver transmission signal of node is selected
The optical transmitter and receiver of 2.5Gbps can only transmission of one line high-definition video signal, it is impossible to realize that the optical transmitter and receiver transmission multi-path high-definition of multinode is regarded
The function of frequency signal.If multi-path high-definition video signal will be transmitted in the network shown in fig. 1, the node of more high bandwidth is needed
Equipment, such as adopts speed and arranges for the optical device+Coarse Wave Division Multiplexer of the optical transmitter and receiver or 2.5Gbps wavelength-division multiplex of 10Gbps
Realize in node, which results in networking cost increase.
Utility model content
In view of this, this utility model embodiment provides a kind of transmission node equipment of high-definition video signal and center receives
End equipment, can be compressed and decompressed to the high-definition video signal for transmitting, and transmits the high-definition video signal of compression in fiber optic network,
So as to transmit compressed and multiplexed high-definition video signal in the case of cost-effective.
The system that this utility model embodiment provides a kind of transmission of high-definition video signal, node device in the system and in
Heart receiving device can be compressed and decompressed to the high-definition video signal for transmitting so that the HD video letter of system transfers compression
Number such that it is able to compressed and multiplexed high-definition video signal is transmitted in the case of cost-effective.
According to above-mentioned purpose, what this utility model was realized in：
A kind of transmission node equipment of high-definition video signal, including：More than one serial data interface SDI receiving units
(301), more than one visual redundancy coding VVLC compression algorithm modules (302), selection video sending module (303), serial
Signal translation interface (304) and distal direction optical module (305) is connect, receive single per road high-definition video signal passage by a SDI
First (301) and connected VVLC compression algorithm modules (302) composition, is linked into choosing per road high-definition video signal passage
Video sending module (303) is selected, wherein,
Received by the SDI receiving units (301) on this road per road high-definition video signal, be sent to the VVLC compression algorithms on this road
After module (302) carries out VVLC compressions, selection video sending module (303) is sent to, is selected by video sending module (303) is selected
Compression high definition video signal all the way above to be sent is selected, is sent to by serial conversion interface (304) and is connect center position light
The high-definition video signal of compression is sent to center receiving device by distal direction optical module (305) is connect by module (306).
VVLC compression algorithms module (302), select video sending module (303) and serial signal translation interface
(304) it is arranged in the on-site programmable gate array FPGA unit set by node device.
Also include connecing center position optical module (306), connect for the configuration information of reception is sent to serial signal conversion
Mouth (304)；
Selection video sending module (303) receives center receiving device by serial signal translation interface (304)
Configuration information, according to the configuration information that received determine will be compressed and multiplexed after high-definition video signal partly or entirely send.
Described serial signal translation interface (304) are two, connect distal direction optical module (305) respectively and connect center position
Optical module (306), the high-definition video signal transmission being compressed respectively and reception configuration information.
The high-definition video signal passage is 3 road high-definition video signal passages.
A kind of transmission center receiving device of high-definition video signal, including：Connect distal direction optical module (400), second
Serial signal translation interface (401), more than one VVLC decompression algorithm modules (402) and more than one SDI transmitting element
(403), per road high-definition video signal passage by VVLC decompression algorithm modules (402) and connected SDI transmitting elements
(403) it is connected, wherein,
The compression high definition video signal that distal direction optical module (400) receives distal end is connect, the conversion of the second serial signals of Jing connects
After the serioparallel exchange of mouth (401), VVLC decompression algorithm modules (402) on correspondence road, the VVLC decompression algorithms on correspondence road is sent to
After module (402) decompression obtains high-definition video signal, the SDI transmitting elements (403) on correspondence road are sent to, by the SDI on correspondence road
Transmitting element (403) carries out the output of high-definition video signal.
Second serial signal translation interface (401) and VVLC decompression algorithm modules (402) are by set second
FPGA unit is realized.
Also include universal asynchronous receiving-transmitting transmitter UART modules (404), configuration information is changed through the second serial signal
After the serial conversion of interface (401), it is sent on the node device of distal end by connecing distal direction optical module (400).
The high-definition video signal passage is 8 road high-definition video signal passages.
A kind of system of high-definition video signal transmission, including：Accessible multiple any of the above-described described node device and
Any of the above-described described center receiving device, after described node device is connected using chain optical fiber, is arrived by intelligent acess
On the center receiving device, configuration information is sent to center receiving device the section of each distal end by the optical fiber of system
On point device, indicate that the compressed and multiplexed high-definition video signal for expecting to show on the receiving device of center is sent to center connects
On receiving end equipment, carried out after VVLC decompressions by center receiving device, shown on the receiving device of center.
As can be seen from the above scheme, the node device and center receiving device that this utility model is provided can using scene
Programming gate array (FPGA) unit, it is compressed and decompressed to the high-definition video signal of approach by visual redundancy encoding and decoding technique,
The high-definition video signal of compression is transmitted in fiber optic network such that it is able to transmit compressed and multiplexed high definition in the case of cost-effective
Video signal.
Description of the drawings
Fig. 1 provides the fiber optic network structural representation of transmission video signal for prior art；
The structural representation of the VVLC compression algorithm modules that Fig. 2 is provided for this utility model；
The node device structural representation of the high-definition video signal transmission that Fig. 3 is provided for this utility model；
The center receiving device structural representation of the high-definition video signal transmission that Fig. 4 is provided for this utility model；
Fig. 5 transmits the system structure diagram of high-definition video signal for the node type that this utility model is provided.
Reference
101- wavelet transform subelements
102- frame modes 2 predict subelement
103- Wavelet Transform Parameters piecemeal subelements
104- Wavelet Transform Parameters quantify subelement
105- Wavelet Transform Parameters Variable Length Code subelements
301-SDI receiving units
302-VVLC compression algorithm modules
303- selects video sending module
304- serial signal translation interfaces
305- connects distal direction optical module
306- connects center position optical module
400- connects distal direction optical module
401- the second serial signal translation interfaces
402-VVLC decompression algorithm modules
403-SDI transmitting elements
404-UART modules
Specific embodiment
For making the purpose of this utility model, technical scheme and advantage become more apparent, develop simultaneously enforcement referring to the drawings
Example, is described in further detail to this utility model.
This utility model in node device and center receiving device using FPGA unit be respectively provided with the frog regarding vision without
Coding (VVLC, VORX Visual Lossless Coding) compression algorithm module and VVLC decompression algorithm modules is damaged, it is right respectively
High-definition video signal with a width of 1.485Gbps is compressed decompression, and the band of the high-definition video signal after compression is a width of
0.25Gbps so that the high-definition video signal of the system transfers of node type transmission high-definition video signal is the HD video after compression
Signal, if using existing optical transmitter and receiver as node device, it is only necessary to the integrated FPGA unit in optical transmitter and receiver, so, so that it may
To transmit the high-definition video signal of ten tunnels compression.
VVLC is prior art, and its core concept is to accurately distinguish the visual signal being perceived by the human eye, and removing human eye can not
Discover or human eye do not had the redundancy of any effect, on the premise of ensureing that the subjective identification quality of human eye does not have significant change
The compression coding decompression algorithm for carrying out.After VVLC compression algorithm resume modules, the HD video letter of former 1.485Gbps bandwidth
Number 0.25Gbps bandwidth has been compressed against it.
The structural representation of the VVLC compression algorithm modules that Fig. 2 is provided for this utility model, as illustrated, VVLC compressions are calculated
Method module predicts subelement 102, Wavelet Transform Parameters piecemeal subelement by wavelet transform subelement 101, frame mode 2
103rd, Wavelet Transform Parameters quantify subelement 104 and Wavelet Transform Parameters Variable Length Code subelement 105, wherein,
High-definition video signal sequentially passes through wavelet transform subelement 101, the prediction subelement 102, small echo of frame mode 2
Transformation parameter piecemeal subelement 103, Wavelet Transform Parameters quantifies subelement 104 and Wavelet Transform Parameters Variable Length Code subelement
After 105 process, the high-definition video signal for compressing, the system that high-definition video signal is transmitted in node type by transmission channel is obtained
Middle transmission.
Correspondingly, the inverse process of VVLC compression algorithms module is formed VVLC compression algorithm decompression modules.
In the structure shown here, what the prediction of frame mode 2 referred to is exactly the prediction of DC values.
The node device structural representation of the high-definition video signal transmission that Fig. 3 is provided for this utility model, including：One with
On SDI receiving units 301, more than one VVLC compression algorithms module 302, select video sending module 303, serial signal
Translation interface 304 and connect distal direction optical module 305, per road high-definition video signal passage by a SDI receiving unit 301 and with
One VVLC compression algorithms module 302 of its connection is constituted, and is linked into selection video per road high-definition video signal passage and is sent mould
Block 303, wherein,
Received by the SDI receiving units 301 on this road per road high-definition video signal, be sent to the VVLC compression algorithm moulds on this road
After block 302 carries out VVLC compressions, selection video sending module 303 is sent to, selects to send by video sending module 303 is selected
All the way more than compression high definition video signal, be sent to by serial conversion interface 304 and connect center position optical module 306, by
Connect distal direction optical module 305 and the high-definition video signal of compression is sent to into center receiving device.
In the structure shown here, VVLC compression algorithms module 302, selection video sending module 303 and serial signal translation interface
304 are provided in the FPGA unit set by node device.
In the structure shown here, the node device can access three road high-definition video signals, that is, it is high to be respectively connected to three tunnels
The SDI receiving units 301 of clear channel video signal, SDI receiving units 301 can be completed using chip GV7601, main to realize
Equilibrium treatment to high-definition video signal and serioparallel exchange are processed, through the high-definition video signal of the serial of chip GV7601 process
The high-definition video signal for being converted to parallel BT1120 forms is input in FPGA unit.
In the structure shown here, the model that the FPGA unit for being adopted is adopted can be XC7A100T, on FPGA unit Zhong Mei road
The video data of BT1120 forms processes the compression of Hou Mei roads after VVLC compression algorithms module 302 is compressed process
The a width of 0.25Gbps of band of high-definition video signal, is then sent to select video sending module 303.
In the structure shown here, video sending module 303 is selected to connect by 304 reception center of serial signal translation interface
The configuration information of receiving end equipment, determined the high-definition video signal part after the compression on three tunnels according to the configuration information that received or
Center receiving device is sent to all.At this moment, also include in the structure shown here connecing center position optical module 306, will connect from center
The configuration information that receiving end equipment is received is sent to serial signal translation interface 304.
In the structure shown here, serial signal translation interface 304 has two, connects distal direction optical module 305 respectively and connects center
Direction optical module 306, the transmission of the high-definition video signal being compressed respectively and reception configuration information, the serial signal conversion
Interface 304 can be Serdes interfaces, be converted to serial data for carrying out parallel data.
The structural representation of the center receiving device of the high-definition video signal transmission that Fig. 4 is provided for this utility model：Connect
Distal direction optical module 400, the second serial signal translation interface 401, more than one VVLC decompression algorithms module 402 and one with
Upper SDI transmitting elements 403, per road high-definition video signal passage by a VVLC decompression algorithms module 402 and connected SDI
Transmitting element 403 is connected, wherein,
Connect the compression high definition video signal that distal direction optical module 400 receives distal end, Jing the second serial signal translation interfaces
After 401 serioparallel exchange, the VVLC decompression algorithms module 402 on correspondence road, the VVLC decompression algorithms module 402 on correspondence road is sent to
After decompression obtains high-definition video signal, the SDI transmitting elements 403 on correspondence road are sent to, by the SDI transmitting elements 403 on correspondence road
Carry out the output of high-definition video signal.
In the structure shown here, the second serial signal translation interface 401 is Serdes interfaces.
In the structure shown here, the second serial signal translation interface 401 and VVLC decompression algorithms module 402 are by set second
FPGA unit realization, model XC7A200T that the second FPGA unit is adopted.
In the structure shown here, the compression high definition video signal of reception is solved parallel by the Serdes interfaces in the second FPGA unit
Data, 8 channel parallel datas in parallel data are respectively connected in the VVLC decompression algorithms module 402 on correspondence road, by correspondence
The solution of VVLC decompression algorithms module 402 on road extrudes high-definition video signal and is generated as the high-definition video signal of BT1120 forms to right
In the SDI transmitting elements 403 of Ying Lu.The SDI transmitting elements 403 on correspondence road adopt chip GV7600, and main realization will be parallel
The high-definition video signal of multichannel BT1120 form carries out serial conversion, obtains high-definition video signal and drives output.
In the structure shown here, also including universal asynchronous receiving-transmitting transmitter (UART) module 404, by matching somebody with somebody for center receiving device
Confidence is ceased after the serial conversion of the second serial signal translation interface 401, is sent to far by connecing distal direction optical module 400
On the node device at end.
Fig. 5 transmits the system structure diagram of high-definition video signal for the node type that this utility model is provided, as illustrated,
The center receiving device shown in node device as shown in Figure 3 and a Fig. 4 including accessible distal end, described node
After equipment is using the connection of chain optical fiber, by intelligent acess to the center receiving device.Each node device can connect
Enter 3 road high-definition video signals, in the optical fiber of system, reserve the high-definition video signal bandwidth of 8 tunnels compression, center receiving device will
Configuration information is sent on the node device of each distal end by the optical fiber of system, indicates to expect on the receiving device of center
The high-definition video signal of the 8 tunnels compression for showing is sent on the receiving device of center, carries out VVLC solutions by center receiving device
After pressure, show on the receiving device of center.
Within the system, if center receiving device will switch shows the high-definition video signal do not gone the same way, need weight
New send configuration information.
As can be seen that apply the node device and Fig. 4 of Fig. 3 in node type transmits the system of high-definition video signal
After the receiving device of center, it is possible to the high-definition video signal of transmission compression, so as to effectively reduce bandwidth of an optical fiber, in video
On the premise of image vision is lossless, high-definition video signal bandwidth all the way is reduced to into 250Mbps from 1.48Gbps.Due to each
Being provided with VVLC compression algorithms module on the node device of individual distal end carries out the compression of high-definition video signal, using with a width of
The node device of 2.5Gbps can process the incompressible video signal of high definition on ten tunnels, effectively reduce cost.
Preferred embodiment is lifted above, and the purpose of this utility model, technical scheme and advantage have been carried out further specifically
It is bright, it is be should be understood that to the foregoing is only preferred embodiment of the present utility model, it is not new to limit this practicality
Type, all within spirit of the present utility model and principle, any modification, equivalent and improvement for being made etc. should be included in
Within protection domain of the present utility model.
Claims (10)
1. the transmission node equipment of a kind of high-definition video signal, it is characterised in that include：More than one serial data interface
SDI receiving units (301), more than one visual redundancy coding VVLC compression algorithm modules (302), selection video sending module
(303), serial signal translation interface (304) and distal direction optical module (305) is connect, per road high-definition video signal passage by one
SDI receiving units (301) and connected VVLC compression algorithm modules (302) composition, lead to per road high-definition video signal
Road is linked into selection video sending module (303), wherein,
Received by the SDI receiving units (301) on this road per road high-definition video signal, be sent to the VVLC compression algorithm modules on this road
(302), after carrying out VVLC compressions, selection video sending module (303) is sent to, will by selecting video sending module (303) to select
The compression high definition video signal all the way above for sending, is sent to by serial conversion interface (304) and connects center position optical module
(306) high-definition video signal of compression is sent to into center receiving device by connecing distal direction optical module (305),.
2. transmission node equipment as claimed in claim 1, it is characterised in that VVLC compression algorithms module (302), select
Video sending module (303) and serial signal translation interface (304) are arranged on the field-programmable gate array set by node device
In row FPGA unit.
3. transmission node equipment as claimed in claim 1 or 2, it is characterised in that also including connecing center position optical module
(306), for the configuration information of reception is sent to serial signal translation interface (304)；
It is described to select video sending module (303) to receive matching somebody with somebody for center receiving device by serial signal translation interface (304)
Confidence ceases, according to the configuration information that received determine will be compressed and multiplexed after high-definition video signal partly or entirely send.
4. transmission node equipment as claimed in claim 3, it is characterised in that described serial signal translation interface (304) are two
It is individual, distal direction optical module (305) is connect respectively and connects center position optical module (306), the HD video letter being compressed respectively
Number transmission and receive configuration information.
5. transmission node equipment as claimed in claim 3, it is characterised in that the high-definition video signal passage is 3 tunnel high definitions
Channel video signal.
6. the transmission center receiving device of a kind of high-definition video signal, it is characterised in that include：Connect distal direction optical module
(400), the second serial signal translation interface (401), more than one VVLC decompression algorithm modules (402) and more than one SDI send out
Unit (403) is sent, is sent out by VVLC decompression algorithm modules (402) and connected SDI per road high-definition video signal passage
Unit (403) is sent to be connected, wherein,
Connect the compression high definition video signal that distal direction optical module (400) receives distal end, Jing the second serial signal translation interfaces
(401), after serioparallel exchange, VVLC decompression algorithm modules (402) on correspondence road, the VVLC decompression algorithm moulds on correspondence road are sent to
After block (402) decompression obtains high-definition video signal, the SDI transmitting elements (403) on correspondence road are sent to, are sent out by the SDI on correspondence road
Unit (403) is sent to carry out the output of high-definition video signal.
7. center receiving device as claimed in claim 6, it is characterised in that the second serial signal translation interface
And VVLC decompression algorithm modules (402) is realized by set the second FPGA unit (401).
8. center receiving device as claimed in claims 6 or 7, it is characterised in that also including universal asynchronous receiving-transmitting transmitter
UART modules (404), by configuration information after the serial conversion of the second serial signal translation interface (401), by connecing distal end
Direction optical module (400) is sent on the node device of distal end.
9. center receiving device as claimed in claim 8, it is characterised in that the high-definition video signal passage is that 8 tunnels are high
Clear channel video signal.
10. the system that a kind of high-definition video signal is transmitted, it is characterised in that include：Accessible is multiple such as Claims 1 to 5
Arbitrary described node device and a center receiving device as described in claim 6～9 is arbitrary, described node device
After using the connection of chain optical fiber, by, on intelligent acess to the center receiving device, center receiving device will be with confidence
Breath is sent on the node device of each distal end by the optical fiber of system, indicates to expect what is shown on the receiving device of center
Compressed and multiplexed high-definition video signal is sent on the receiving device of center, is carried out after VVLC decompressions by center receiving device,
Show on the receiving device of center.
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| CN201620831166.2U CN206042212U (en) | 2016-08-03 | 2016-08-03 | System for high -definition video signal's transmission node equipment, central receiving terminal equipment and transmission |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154062A (en) * | 2017-05-12 | 2017-09-12 | 郑州云海信息技术有限公司 | A kind of implementation method of WebP Lossy Compression Algorithms, apparatus and system |
| CN108037338A (en) * | 2017-12-20 | 2018-05-15 | 福建利利普光电科技有限公司 | A kind of multichannel based on optical fiber transmission isolates digital oscilloscope |
| CN108449567A (en) * | 2018-03-23 | 2018-08-24 | 广州市奥威亚电子科技有限公司 | A kind of method and device being used for transmission digital video |
| CN116132712A (en) * | 2023-02-08 | 2023-05-16 | 北京镁伽机器人科技有限公司 | Data transmission method, data sending device and data receiving device |
-
2016
- 2016-08-03 CN CN201620831166.2U patent/CN206042212U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154062A (en) * | 2017-05-12 | 2017-09-12 | 郑州云海信息技术有限公司 | A kind of implementation method of WebP Lossy Compression Algorithms, apparatus and system |
| CN108037338A (en) * | 2017-12-20 | 2018-05-15 | 福建利利普光电科技有限公司 | A kind of multichannel based on optical fiber transmission isolates digital oscilloscope |
| CN108449567A (en) * | 2018-03-23 | 2018-08-24 | 广州市奥威亚电子科技有限公司 | A kind of method and device being used for transmission digital video |
| CN116132712A (en) * | 2023-02-08 | 2023-05-16 | 北京镁伽机器人科技有限公司 | Data transmission method, data sending device and data receiving device |
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